Structuring in Cement Systems with Introduction of Graphene Nano-Additives

International Conference on Construction, Architecture and Technosphere Safety 2017

土木建筑工程

Yanturina, R.A.^1 ; Trofimov, B.Ya.^1 ; Ahmedjanov, R.M.^2

Institute of Architecture and Construction, Building Materials and Products, South Ural State University, Lenin Avenue, 76, Chelyabinsk

454080, Russia^1

UralNIIstrom, 5/2, Stalevarov street, Chelyabinsk

454047, Russia^2

关键词: Cement stones;    Cement system;    Compressive strength of concrete;    Concrete research;    Dense structures;    Mechanical characteristics;    Nano additives;    Resistance to frosts;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/262/1/012017/pdf
DOI  :  10.1088/1757-899X/262/1/012017

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

At present, one of the most promising areas in the field of concrete research is the study of the effect of nano-additives for the production of highly effective concretes. Many authors have already obtained primary results which testify to the very effective role of nanoadditives based on carbon in modifying concrete. In this paper, the influence of a nano-additive of graphene on the phase composition and microstructure of the cement stone was studied. It has been found that, when a nano-additive of graphene is introduced, low-basic calcium hydrosilicates are mainly formed. This leads to an increase in the compressive strength of concrete. The results of the study of the microstructure of cement stone with nano-additive graphene showed that the high compressive strength of concrete modified with nano-additive graphene is explained by the cement stone dense structure. Thus, it was found that the nanoadditive of graphene contributes to the formation of a dense structure of cement stone, composed mainly of low-basic calcium hydrosilicates, and due to this, the physical and mechanical characteristics of concrete and its resistance to frost and other forms of aggression.